The WaterTek APF (Air Powered Feeder) is economical, accurate and gentle on feed. The feeder attachs to various types of hoppers, and utilizes a regenerative blower (1/2 hp. or larger) to dispense feed from 3 feet to +20 ft. A one inch PVC line from the blower feeds air to multiple feeders. The WaterTek APF feeds 3.6 oz. of feed per second of any size pellet feed. Hoppers and Timers sold separately!